Window regulator



Oct. 2, 1928. 1,686,171

J. H. PARSONS WINDOW REGULATOR Filed June 29, 1925 INVENTO 1706 7% WWW/16 T RNEY.

Patented Oct. 2, 1928.

UNITED STATES.

JOHN H. PARSONS, or roN'rIAc, MICHIGAN.

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Application filed June 29, 1925. Serial No. 40,361. i

This invention relates to means for regulating the height of automobile windows and the like, and has for its principal object the provision of simple, positive, and comparatively inexpensive means for raising and lowering the windows and maintaining them at any desired position.

Another object of my invention is the arrangement of an operating lever engaging the. window and carrying a pinion movable over a stationary rack, the pinion being rotated whenever desired through suitable gearing connected with the operating handle.

A further object of my invention is the I I5 provision of a counterbalance spring between the operating lever and one of the train of operating gears to lessen the work performed by the operator, the tension on the spring varying with the height of the window.

Other objects and advantages will be ap'- parent from the following description, wherein reference is made to the accompanying drawings illustrating a preferred embodiment of my invention and wherein similar reference numerals designate similar parts throughout the several views. i In the drawings:

Fig. 1 is a detail sectional view through the lower corner of a window frame, showing the preferred mounting of my improved window regulating mechanism with relation to the window and window frame.

Fig. 2 is an enlarged detail vertical section taken substantially on the line 22 of Fig. 1,,and i Fig. 3 is a detail section taken substantially on the line 3 -3 of Fig. 2.

Referring now to the drawings, the numeral 5 designates the cross bar secured at its extremities to the side bar 6 of a-wmdow frame and carrying the fulcrum plate of my improved window regulating mechanism. It will be understood that the showing of the cross bar and the remainder of the window frame is intended to be typical of the usual 12 mounted in the plate at the center from which the rack 10 is struck, and a pinion 13 is mounted intermediate the ends of the lever 11 and meshes with the stationary rack 10. The free extremity of the lever 11 carries a roller 1 1 loosely mounted within the channel bar 15 fixed upon the lower extremity of the window 8, whereby the free extremity of the lever may move laterally of the window during the operation of my re ating mechanism. It will be noted that the lever 11 is a lever of the third order, its fulcrum being at one end of thelever upon the axle 12, the weight being supported upon'the opposite end of the lever upon the roller 14:, while the shaft 17 of the operating handle 18 and meshing with a ear 19 loosely mounted upon the axle 12' and in turn meshing with a gear 20 fixed upon the axle 21 upon which the pinion 13 is secured. By Virtue of this construction 1 the rotation of the handle 18 in either direction will rotate the gear 19 in the opposite direction and the gear 20 and pinion 13 in the same direction as the handle. The rotation of the pinion 13 will cause it to move over the stationary rack 10 inaccordance with the direction of rotation of the handle and so swing the operating lever 11 on its fulcrum to raise or lower its free extremity, which as above described is loosely mounted within the channel bar 15 carried by the window 8. Accordingly, the window will be positively '70 power is applied intermediate the ends of raised or lowered as long'as the rotation of y the handle 18 continues, andsince the pinion 13 is always in engagement with the teeth of the rack 10 it will be apparent that the window may be supported in any adjusted position. Preferably some form of clutch mechanism is interposed between the operating mechanism and a fixed portion of the frame to prevent the weight of the window accidentally forcing the lever 11 from a raised position to its lowermost position. In the illustrated embodiment I have shown a simple form of clutch mechanism comprising a coil spring 22 arranged within a drum 23 fixed ,upon. the fulcrum plate 7, the spring surrounding a pair of discs 24 secured upon the shaft 17 ofthe operating handle. The ends of the spring 22 are bent inwardly substantially as shown in Fig. 3 to form projections 25 adapted to engage the opposite sides of a laterally extending lug 26 carried by the disc 21 to which the pinion 16 is secured (note Figs. 2 and 3). 'A notch 28 is-formed in the discs 24 to receive the inwardly extending extremities of the spring 22 and the lug 26, one side wall of the notch 28 being adapted to engage the adjacent end of the spring whenever the discs 24 are rotated in either direction. Whenever the handle 18 is rotated to' lift or lower the window, one side wall of the notch 28 in the discs 24: will engage theadjacent extremity of the spring 22 and move it in the direction to contract the spring, and further movement of the discs 24 will bring the end of the spring into engagement with the lug 26 of the disc 27 and thereupon all the discs will move together to operate the train of gears to swing the lever-11. As soonas the handle 18 is released the weight of the window 8 will tend to move the disc 27 and 'so bring its lug 26 into engagement with one of the inbent extremities of the spring 22, forcing the spring to expand until itengages the inner periphery of the fixed drum 23. This engagement of the spring with the drum 23 serves to. prevent further downward movement of the lever 11 because of the weightof the window. i

' Since the above described mechanism positively raises and lowers the window and maintains it'at any desired position, no counterbalance for the weight ofthe window is necessary. However, should it be desirable to ing the window, a pinion journaled on the lever and meshing with the rack, and means for rotating the pinion. I

2. In a device of the character described, a window, and means for raising or lowering the window including a fixed curved lack, a lever fulcrumed centrally of the rack and engaging the window, a pinion journaled on the lever intermediate its ends and meshing with the rack, and means for rotating the pinion including an operating handle and a train of gears between the handle and pinion.

3. In a device of the character described,

a window, and means for raising or lowering the window including a fixed arcuate rack,

a lever fulcrumed at the center from which v said are is struck and engaging the window, a pinion journaled on the lever and meshing with the rack, and means for rotating the pinion.

4. In a device of the character described,

a window, and means for raising or lower 7 ing the window including a fixed arcuate rack, a lever fulcrumed at the center from which said are is struck and engaging the window, a pinion journ'aled on the lever and meshing with the rack, means for rotating 1 the pinion including a gear also journaled on the lever, and means for counterbalancing the weight of the window.

window, and means for raising or lowering the window including afulcrum plate fixed adjacent the window and having an arcuate rack formed in its periphery, a lever ful- '95 5. In a device of the character described, a I

lesson the work performed by the operator *crumed at one extremity on the fulcrum a counterbalance mechanism may be provided.

,As herein shown a comparatively stiff spring 29 is coiled about the axle 21 on which is mounted the pinion 13 and gear 20 (note Fig. 2), one extremity of the spring being secured to the axle 21 and the opposite ex-' tremity being hooked over a laterally extending lug 30 struck up from the bracket arm 31 fixed upon the lever 11. Accordingly, the spring 29 will be wound or unwound whenever the axle 21 is rotated through the rotation of the handle 18, and the spring is so arranged and adjusted that the tension of the spring tends to elevate the window to the same extent that the weight of the windowtends to lower it by force of gravity.

While itwill be apparent that the illustrated embodiment of my invention herein disclosed iswell calculated to adequately ful-. fill the objects and advantages primarily stated, it is to be understood that the inven:

tion is susceptibleto variation, modification and change within the spirit and scope of the sub'oinedclaims. I I v aving described my invention, I claim 1. In a device of the character described,

a window, and means for raising or lowering the window including a fixed curved rack,

a lever fulcrumedupon the rack and engagplate substantially at the center from which the arc of the rack is struck and engaging the window at its opposite extremity, a pinion mounted upon the lever intermediate its ends and meshing with the rack, and means for rotating the pinion. n

' 6. In a device of the character described,

a window, and means for raising or lowering the window including a fulcrum plate fixed adjacent the window and having an arcuate rack formed in its periphery, a

lever fulcrumed' at oneiextremity on the fulcrum plate substantially at the center from which the arc of the rack is struck and engaging the window at its opposite extremity,

' a pinlon mounted upon the lever intermediate its ends and meshing with the rack, and

means for-rotating the pinion including a 1 gear fixed on the shaft of the pinion, a sec- 0nd gear meshing with the first mentioned adjacent the window and having an arcuate rack f-orm'ed its periphery, a lever ful- Y device of'the character described, Y a window, and means for raising or lowering crumed at one extremity on the fulcrum plate substantially at the center from which the arc of the rack is struck and engaging the window at its opposite extremity, a pinion mounted upon the lever intermediate its ends and meshing with the-rack, and means for rotating the pinion includinga train of gears in mesh with the pinion the axis of one Nof said gears being at the center from which said are is struck, an operating handle, and a clutch arranged between the l1an dle and one gear of the train.

In witness whereof I hereunto set my hand.

JOHN H. PARSONS. 

